Yeah, I'm also surprised more people don't realize that the Dante they know and love is based on a poem. I mean if it's not, then there's just a s***load of incredible coincidences lol --- ( ^_^)/\(^_^ ) Maya high five!
Dante Alighieri wasn't a part of any group and he did not travel around the after life. He was a poet who had a dream about his mentor Vergil and what happened to him after his death. He then converted this dream into a poem describing how he imagines the after life to be. He was exiled due to his vision of hell being different to what the catholic church believed hell to be so he kept writing purgatory and heaven in exile. He isn't some sort of super human, just a man with an imagination and skill at writing